What time frame best describes when earthquakes occur?

a. Daily

b. Monthly

c. Yearly

d. Quarterly

If 20% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of cytosine, C?

height has been proven to have a genetic basis yet the two twins are not identical heights. what reason might explain differences in height of the twins

Which of the following statements regarding Pavlov is accurate? Pavlov was studying salivation in dogs as part of a research program on digestion. Pavlov continued his Nobel Prize-winning research on digestion after documenting conditioning.

The four organisms illustrated are all capable of various forms of asexual reproduction. What processes, involving DNA and RNA, are necessary for all four of these organisms to successfully make replicas of themselves? a.

How are cancer cells generated? Choose the correct answer. A mutation causes cells to divide without stopping. A mutation causes cells to stop dividing. A mutation turns the cell into a nonfunctioning cell.

Which level of biological organization is the simplest level at which a structure can support life functions

Which scientist conducted the first psychological experiment?

Why is the human heart so complicated?

Why is the Carbon Cycle so Important to our Planet?

Explain how your model demonstrated energy transformation from thermal energy to mechanical energy during a volcanic eruption. (I mixed warm water, vinegar, and baking soda)